Shuhtin, V. V., et al. “Comparison of the Effectiveness of Nsaids Monotherapy and Combination Therapy With Platelet-Rich Plasma in Patients With Osteochondrosis of the Cervical Spine”. Journal of Education, Health and Sport, vol. 5, no. 10, Oct. 2015, pp. 269-74, https://apcz.umk.pl/JEHS/article/view/3062.